<?php
/**
 * Copyright (c) Enalean, 2018. All Rights Reserved.
 *
 * This file is a part of Tuleap.
 *
 * Tuleap is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Tuleap is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Tuleap. If not, see <http://www.gnu.org/licenses/>.
 */

namespace Tuleap\PullRequest\GitReference;

use Tuleap\PullRequest\PullRequest;

class GitPullRequestReferenceRetriever
{
    /**
     * @var GitPullRequestReferenceDAO
     */
    private $dao;

    public function __construct(GitPullRequestReferenceDAO $dao)
    {
        $this->dao = $dao;
    }

    /**
     * @return GitPullRequestReference
     * @throws GitPullRequestReferenceNotFoundException
     */
    public function getGitReferenceFromPullRequest(PullRequest $pull_request)
    {
        $row = $this->dao->getReferenceByPullRequestId($pull_request->getId());
        if (empty($row)) {
            throw new GitPullRequestReferenceNotFoundException;
        }
        return new GitPullRequestReference($row['reference_id'], $row['status']);
    }
}
